CN109747624A - A kind of hybrid vehicle start-stop control system and control method - Google Patents
A kind of hybrid vehicle start-stop control system and control method Download PDFInfo
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- CN109747624A CN109747624A CN201811489897.3A CN201811489897A CN109747624A CN 109747624 A CN109747624 A CN 109747624A CN 201811489897 A CN201811489897 A CN 201811489897A CN 109747624 A CN109747624 A CN 109747624A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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Abstract
The present invention relates to a kind of hybrid vehicle start-stop control systems, including transmission device: to impart power to driving wheel；Motive power subsystem: it for former fuel vehicle dynamical system, is connect to generate driving source, and by reequiping power sub-system with transmission device；Repacking power sub-system: start and stop and hybrid power driving to realize hybrid vehicle；Controller: integrated hybrid vehicle start-up and shut-down control method, input signal is acquired by sensor, according to the condition and range of setting, judge and control motive power subsystem and repacking power sub-system, hybrid vehicle is made to enter Brake energy recovery mode, drive mode, active sliding mode or neutral position sliding mode.Compared with prior art, the present invention has many advantages, such as convenient for repacking, at low cost, maximization dynamic property and economy.
Description
Technical field
The present invention relates to hybrid vehicle control fields, more particularly, to a kind of hybrid vehicle start-stop control system
And control method.
Background technique
With the quickening of rapid development of economy and urbanization process, the world, which is faced with, solves energy crisis and Environment control
The dual-pressure of pollution.In all fossil energy consumptions, the energy consumption ratio that traffic and transport field generates is very high, wherein
Field of road traffic both when various modes of transportation in energy consumption and discharge amount it is maximum (70% or more accounting) and fastest-rising
The primary air pollution source of main body and big city.Therefore increasingly strict environmental protection and emission regulation propose automotive energy-saving emission-reducing
Requirements at the higher level.Now can not large-scale use electric vehicle under the premise of, hybrid vehicle has start and stop technology, opposite to pass
System fuel vehicle can reduce 0.3-0.5L/100km, be the current comprehensive optimal selection for meeting emission performance, dynamic property and economy.
The problem of hybrid vehicle start stop system is primarily present at present has: (1) can not directly carry out in existing vehicle
Hybrid power and start and stop function are realized in repacking；(2) it needs to realize on ready-made hybrid vehicle, entire hybrid power vapour
The vehicle development cycle is long, and development and production platform is at high cost again；(3) hybrid power automobile power system of application and transmission
System complex, high production cost.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of hybrid vehicles
Start-stop control system and control method.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of hybrid vehicle start-stop control system, the system include:
Transmission device: to impart power to driving wheel；
Motive power subsystem: for former fuel vehicle dynamical system, to generate driving source, and by repacking power sub-system with
Transmission device connection；
Repacking power sub-system: start and stop and hybrid power driving to realize hybrid vehicle；
Controller: integrated hybrid vehicle start-up and shut-down control method acquires input signal by sensor, according to setting
Condition and range judges and controls motive power subsystem and repacking power sub-system, so that hybrid vehicle is entered braking energy and returns
Receipts mode, drive mode, active sliding mode or neutral position sliding mode.
The repacking power sub-system includes sequentially connected 48V power supply, ISG motor and first clutch.
The motive power subsystem includes engine, second clutch and speed changer, the engine, the second clutch
Device, first clutch, speed changer and transmission device are sequentially connected, and the engine is gasoline engine or diesel engine.
A kind of hybrid vehicle start-up and shut-down control method, comprising the following steps:
1) operating state signal that present hybrid automobile is read by sensor, to obtain hybrid vehicle
Operating status；
2) according to the operating state signal of the hybrid vehicle received, controller determines the operation of hybrid vehicle
Mode, including Brake energy recovery mode, drive mode, active sliding mode and neutral position sliding mode, specifically:
21) judge whether driver steps on brake, if so, thening follow the steps 24), if it is not, thening follow the steps 22)；
22) judge whether throttle signal is greater than the set value, if so, 25 are thened follow the steps, if it is not, thening follow the steps 23)；
23) judge whether that throttle signal, the SoC signal of 48V power supply and speed signal are completely within setting range, if
It is to then follow the steps 36), if it is not, thening follow the steps 37)；
24) revolving speed and gearbox gear for obtaining current ISG motor, into Brake energy recovery mode, engagement first from
Clutch separates second clutch, closes engine, and wheel passes through transmission device towing astern ISG motor, return step 21)；
25) enter drive mode, judge whether the SoC signal of current vehicle speed and 48V power supply is in setting range, if
It is to then follow the steps 28), if it is not, thening follow the steps 29)；
26) enter active sliding mode, engage first clutch, separate second clutch, close engine, open ISG
Motor, return step 21)；
27) enter neutral position sliding mode, separate first clutch, engage second clutch, close engine, engine falls
Drag ISG motor, return step 21)；
28) first clutch is engaged, second clutch is separated, closes engine, opens ISG motor, return step 21)；
29) first clutch is engaged, second clutch is engaged, opens engine, opens ISG motor, return step 21).
In the step 1), operating state signal include throttle signal, brake signal, BMS system 48V power supply SoC
Signal, current vehicle speed signal, engine rotational speed signal, ISG tach signal and current shift signal.
When hybrid vehicle operates under Brake energy recovery mode, if vehicle is in emergency braking or power supply SoC
When higher than given threshold, then the connection of ISG motor is disconnected, stops Brake energy recovery.
The given threshold is 60%.
When hybrid vehicle operates in drive mode and drives jointly in engine and ISG motor:
When normally travel, controller controls engine operation in economic zone, and insufficient torque is provided by ISG；
When power supply SoC is not enough to that ISG is maintained to run, controller control engine is run with pure engine mode.
When hybrid vehicle operates under active sliding mode, when power supply SoC is lower than given threshold, control is started
Machine towing astern ISG power generation
The given threshold is 50%.
Compared with prior art, the invention has the following advantages that
1) present invention can increase the present invention and repack into start and stop skill on the basis of retaining conventional fuel oil car configuration substantially
The hybrid vehicle of art almost retains original dynamical system, while taking into account low emission and high economy, to dynamic property
Also have some improvement.
2) compared to direct hybrid vehicle, the hybrid vehicle repacking cost that the present invention converts is not high,
Totle drilling cost is far below direct hybrid vehicle.
3) it is divided into four kinds of operating conditions and carries out start-up and shut-down control, is conducive to maximize its dynamic property of optimization and economy.Drive mode
Fuel consumption can be reduced simultaneously guaranteeing dynamic property, Brake energy recovery mode can make full use of energy consumption when braking, actively sliding
Row mode is conducive to improve the stabilization of high-performance cruise, and neutral position sliding is conducive to kinetic energy recycling of stopping.
Detailed description of the invention
Fig. 1 is structure principle chart of the invention.
Fig. 2 is control system schematic diagram of the invention.
Fig. 3 is control method flow chart of the invention.
Specific embodiment
With reference to the accompanying drawing, the embodiment of the present invention is elaborated.It should be mentioned that the content that the following drawings is shown
It is only intended to explain the present embodiment, but is not limited to the embodiment, any other realities generated without other creative works
Example is applied, appoints and so belongs to the scope of protection of the present invention.
Embodiment
Fig. 1 is the structure principle chart of the weak mixed automobile of one embodiment of the invention.As shown in Figure 1, the master of the weak mixed automobile
Wanting component includes second clutch 1, first clutch 2, speed changer 3, transmission device 4, engine 5, ISG motor 6,48V power supply
7, wheel 8a and 8b and controller 30, wherein repacking power sub-system 10 includes 48V power supply 7, ISG motor 6 and the first clutch
Device 2.Motive power subsystem includes engine 5, second clutch 1 and speed changer 3.
The weak mixed automobile that the present embodiment uses is reequiped on the basis of former conventional fuel oil car, and motive power subsystem is retained
System 20, main to increase repacking power sub-system 10, controller 30 passes through bus and repacking power sub-system 10 and motive power subsystem
System 20 is respectively connected with the bi-directional, it can be achieved that electric signal.In the embodiment, the output shaft of engine 5 passes through second clutch 1
Power is passed into first clutch 2, first clutch 2 is successively connect with speed changer 3 and transmission device 4, and power is passed to wheel
8a and 8b.48V power supply 7 is composed of several supercapacitors, with ISG motor 6 by electrical connection, can conduct two-way electricity
Stream.ISG motor 6 passes sequentially through first clutch 2, speed changer 3 and transmission device 4 and is connected with wheel 8a and 8b, it can be achieved that wheel
The bi-directional of power between 8a and 8b to ISG6.
Fig. 2 is the control system schematic diagram according to the weak mixed automobile starting/stopping system of one kind of the embodiment of the present invention.Mainly include
48V system on off controller 201, input signal 220 and output signal 230.Input signal 220 includes throttle signal 202, brake
Signal 203,48V power supply SoC signal 204, speed signal 205, engine rotational speed signal 206, ISG tach signal 207 and gear
Signal 208.Output signal includes engine torque signal 209, engine start stop signal 210, ISG dtc signal 211, brake
Pressure signal 212, second clutch binding signal 213 and first clutch binding signal 214.
In the weak mixed car running process of the present embodiment, 48V system on off controller 201 constantly reads driver's operation
The throttle signal 202 and brake signal 203 of generation, the 48V power supply SoC signal 204 in BMS system, by vehicle speed sensor
Engine rotational speed signal 206 that current vehicle speed signal 205, the engine embedded speed probe of acquisition transmit, motor speed pass
The current shift signal 208 that the ISG tach signal 207 and transmission gear level sensor that sensor transmits transmit, is opened by 48V system
Energy management method inside stop controller 201 can judge automatically and sliding in drive mode/Brake energy recovery mode/active
Switch under row mode/four kinds of neutral position sliding mode mode, and exports control signal.Wherein, the engine torque signal 209 of output
It is sent to control unit of engine with engine start stop signal 210, controls the torque and start and stop of engine output setting respectively；It is defeated
ISG dtc signal 211 out is sent to motor control unit, and control ISG generates setting torque；The brake pressure signal of output
212 are sent to brake control, and control brake generates corresponding braking moment；1 binding signal 213 of clutch of output
It is sent to the control unit of clutch 1, controls the combination and separation of clutch 1；2 binding signal 214 of clutch of output is sent
To the control unit of clutch 2, the combination and separation of clutch 2 are controlled.
Fig. 3 is the control method flow chart according to the weak mixed automobile starting/stopping system of one kind of the embodiment of the present invention.Such as Fig. 3 institute
Show, the step of control method of the weak mixed automobile starting/stopping system of the embodiment of the present invention is as follows:
S301 obtains current throttle signal, brake signal, the SoC signal of 48V power supply and speed signal, by the above signal
Pass to 48V on off controller.
S302, judges whether driver steps on brake.If so, thening follow the steps S305；If not, thening follow the steps
S303。
S303, judges whether throttle signal is greater than the set value.If so, thening follow the steps S306；If it is not, then executing step
Rapid S304.
S304 judges whether that throttle signal, the SoC signal of 48V power supply and speed signal are within setting range, example
As throttle less than 20%, SoC be greater than 50% and speed be less than 60km/h, if so, thening follow the steps S307；If it is not, then holding
Row step S308.
S305 obtains the revolving speed and gearbox gear of current ISG motor.
S306, into drive mode.
S307, into active sliding mode.
S308, into neutral position sliding mode.
S309, into Brake energy recovery mode.
S310 judges that the SoC signal of current vehicle speed and 48V power supply is in setting range, such as speed is less than 10km/
H and SoC are greater than 55%, if it is thening follow the steps S314；If not, thening follow the steps S315.
S311 engages first clutch 2, separates second clutch 1, closes engine, opens ISG motor.
S312 separates first clutch 2, engages second clutch 1, closes engine, engine towing astern ISG motor.
S313 engages first clutch 2, separates second clutch 1, closes engine, and wheel passes through transmission device towing astern
ISG motor.
S314 engages first clutch 2, separates second clutch 1, closes engine, opens ISG motor.
S315 engages first clutch 2, engages second clutch 1, opens engine, opens ISG motor.
In this embodiment, energy management strategies cover four kinds of modes, respectively Brake energy recovery mode, driving mould
Formula, active sliding mode and neutral position sliding mode.Wherein, under Brake energy recovery mode, first clutch 2 is engaged, the
The separation of two clutches 1, closes engine, and vehicle is in on-position at this time, and wheel is turned by transmission mechanism towing astern ISG motor
It is dynamic, it is 48V power source charges when meeting condition.Partial brake torque needed for being provided while ISG motor reverses, car assisted system
It is dynamic.In the drive mode, when the SoC of speed and 48V power supply is in setting range, first clutch 2, separation the are engaged
Two clutches 1 close engine, open ISG motor, and ISG motor drives automobilism, belong to pure electric vehicle driving；When speed and
First clutch 2 is engaged when the SoC of 48V power supply is not in setting range entirely, engages second clutch 1, while opening and starting
Machine and ISG motor belong to hybrid power driving.If the SoC of 48V power supply not in range, engine can towing astern ISG motor give
48V power source charges.If the SoC of 48V power supply is sufficient, it can guarantee that engine is in most economical operation work by adjusting ISG torque
Condition reduces oil consumption.In active sliding mode, first clutch 2 is engaged, second clutch 1 separates, and closes engine, opens
ISG motor.Driver does not step on the throttle and brakes, and depends merely on ISG motor-driven vehicle at this time, and car speed can be maintained to stablize at this
State.Under neutral position sliding mode, first clutch 2 is separated, second clutch 1 engages, and closes engine, and vehicle is in certainly
By sliding state, engine can towing astern ISG electric power generation at this time.
In conclusion the present invention can be directly used in conventional fuel oil car, it is adapted into the mixing with start and stop technology
Power vehicle almost retains original dynamical system, and while taking into account low emission and high economy, to dynamic property, there are also certain
Improvement result.
The above particular content is to be specifically described in conjunction with the embodiments to of the invention, and embodiment used cannot limit the present invention
The range protected by law with it.For those skilled in the art, it is realized without departing from conception of the invention other similar
Modification, principle is identical with usage, all should be considered as within legal scope of the invention.
Claims (10)
1. a kind of hybrid vehicle start-stop control system, which is characterized in that the system includes:
Transmission device (4): to impart power to driving wheel；
Motive power subsystem (20): for former fuel vehicle dynamical system, to generate driving source, and pass through repacking power sub-system
(10) it is connect with transmission device (4)；
Repacking power sub-system (10): start and stop and hybrid power driving to realize hybrid vehicle；
Controller (30): integrated hybrid vehicle start-up and shut-down control method acquires input signal by sensor, according to setting
Condition and range judges and controls motive power subsystem (20) and repacking power sub-system (10), hybrid vehicle is made to enter system
Energy take-back model, drive mode, active sliding mode or neutral position sliding mode.
2. a kind of hybrid vehicle start-stop control system according to claim 1, which is characterized in that the repacking is dynamic
Power subsystem (10) includes sequentially connected 48V power supply (7), ISG motor (6) and first clutch (2).
3. a kind of hybrid vehicle start-stop control system according to claim 2, which is characterized in that the motive power
Subsystem (20) includes engine (5), second clutch (1) and speed changer (3), the engine (5), second clutch
(1), first clutch (2), speed changer (3) and transmission device (4) are sequentially connected, and the engine (5) is gasoline engine or bavin
Oil machine.
4. a kind of start-up and shut-down control side using hybrid vehicle start-stop control system as described in any one of claims 1-3
Method, which comprises the following steps:
1) operating state signal that present hybrid automobile is read by sensor, to obtain the operation of hybrid vehicle
State；
2) according to the operating state signal of the hybrid vehicle received, controller determines the operation mould of hybrid vehicle
Formula, including Brake energy recovery mode, drive mode, active sliding mode and neutral position sliding mode, specifically:
21) judge whether driver steps on brake, if so, thening follow the steps 24), if it is not, thening follow the steps 22)；
22) judge whether throttle signal is greater than the set value, if so, 25 are thened follow the steps, if it is not, thening follow the steps 23)；
23) judge whether that throttle signal, the SoC signal of 48V power supply and speed signal are completely within setting range, if so,
It thens follow the steps 36), if it is not, thening follow the steps 37)；
24) revolving speed and gearbox gear for obtaining current ISG motor engage first clutch into Brake energy recovery mode,
Second clutch is separated, engine is closed, wheel passes through transmission device towing astern ISG motor, return step 21)；
25) enter drive mode, judge whether the SoC signal of current vehicle speed and 48V power supply is in setting range, if so,
It thens follow the steps 28), if it is not, thening follow the steps 29)；
26) enter active sliding mode, engage first clutch, separate second clutch, close engine, open ISG motor,
Return step 21)；
27) enter neutral position sliding mode, separate first clutch, engage second clutch, close engine, engine towing astern
ISG motor, return step 21)；
28) first clutch is engaged, second clutch is separated, closes engine, opens ISG motor, return step 21)；
29) first clutch is engaged, second clutch is engaged, opens engine, opens ISG motor, return step 21).
5. start-up and shut-down control method according to claim 4, which is characterized in that in the step 1), operating state signal
Including throttle signal, brake signal, BMS system 48V power supply SoC signal, current vehicle speed signal, engine rotational speed signal, ISG
Tach signal and current shift signal.
6. start-up and shut-down control method according to claim 4, which is characterized in that when hybrid vehicle operates in braking energy
When under take-back model, if vehicle is in emergency braking or power supply SoC higher than given threshold, the connection of ISG motor is disconnected, is stopped
Only Brake energy recovery.
7. start-up and shut-down control method according to claim 6, which is characterized in that the given threshold is 60%.
8. start-up and shut-down control method according to claim 4, which is characterized in that when hybrid vehicle operates in drive mode
And when being driven jointly in engine and ISG motor:
When normally travel, controller controls engine operation in economic zone, and insufficient torque is provided by ISG；
When power supply SoC is not enough to that ISG is maintained to run, controller control engine is run with pure engine mode.
9. start-up and shut-down control method according to claim 4, which is characterized in that actively slided when hybrid vehicle operates in
When under mode, when power supply SoC is lower than given threshold, control engine towing astern ISG power generation.
10. start-up and shut-down control method according to claim 9, which is characterized in that the given threshold is 50%.
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| CN201811489897.3A CN109747624B (en) | 2018-12-06 | 2018-12-06 | Start-stop control system of hybrid electric vehicle |
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| CN201811489897.3A CN109747624B (en) | 2018-12-06 | 2018-12-06 | Start-stop control system of hybrid electric vehicle |
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| CN110341685A (en) * | 2019-07-08 | 2019-10-18 | 高晓杰 | Bi-motor increases journey and drives hybrid electric vehicle engine start-up and shut-down control method and system |
| CN111791892A (en) * | 2020-06-29 | 2020-10-20 | 广州小鹏车联网科技有限公司 | Intelligent vehicle control method and device, vehicle and storage medium |
| CN112356823A (en) * | 2020-10-29 | 2021-02-12 | 大运汽车股份有限公司 | Power control method suitable for hybrid commercial vehicle |
| CN114670621A (en) * | 2022-03-11 | 2022-06-28 | 中国重汽集团济南动力有限公司 | Driving system and driving method for hybrid power concrete mixer |
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